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crop frame
scAnnInG UsInG tWAIn InterfAce In WIndoWs
(contInUed)
Prescan the Image
A preview is a quick low-resolution scan of the
entire original image. from this low-resolution
scan you can get a clearer idea of the image
area you want to include when you click scan.
to preview, the steps are:
1. place the document face down on the scan window glass.
2. click the preview button in the dialog box. After the scanner has
scanned the document, the scanned image will appear in the
preview Window. from the preview image, you can now set the
exact image area you wish to include in your final scan.
Set Up the Scan Parameters
1.
Set the desired image area to be scanned.
Use the crop frame in the preview Window to outline the image
area you wish to scan. click one
of the sides or corners of the
crop frame and drag it out or in
to the desired length and width.
to move the entire crop frame,
position the mouse cursor
inside it and drag with the left
mouse button.
only the area inside the crop frame will be included in the resulting
scanned image when you click scan. the size information at the
bottom of the dialog box is automatically updated when the crop
frame is resized.
2.
Select the scan source.
since we are going to scan a color photograph, choose reflective.
Reflective:
when scanning paper-based documents such as photographs or text
(magazines, books, or images).
3.
Select the desired scan mode.
the scan mode determines how the scanner will read the image.
• color (48-bit) captures 48 bits of color image information for
every pixel in the screen image. reproduce billion of colors.
this option is disabled when the tWAIn-compliant program you
used does not support 48-bit color output.
• color (24-bit) captures 24 bits of color image information for
every pixel in the screen image. reproduce over 16.7 million
colors.
• Gray (16-bit) captures 16 bits of grayscale image information for
every pixel in the screen image. reproduce up to 65536 shades
of gray.
this option is disabled when the tWAIn-compliant program you
used does not support 16-bit grayscale output.
• Gray (8-bit) captures 8 bits of grayscale image information for
every pixel in the screen image. reproduce up to 256 shades of
gray.
• lineart (1-bit) is used for text documents or black-and-white
images.
Summary of Contents for PageExpress 4800 Pro
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